What happens if someone who sets, for example, 20 years from today's date but they don't die? Is it possible to cancel this transaction?

What if someone who sets it for 5 years later date or block, dies in a year or two? Is there any possibility for their known family member to get these coins before the set "LockTime" period by any means or they need to wait for 5 years before they are sent the coins to their address?